Furnace.



C. H. SINDERSON.

FURNACE.

APPLICATION FILED OCT- 20, 151?.

Patented Apr. 2, 1918.. 3 SHEETS-SHEET! CHHRLES Fl SINDERSQN C.-H. SINDERSON.

FURNACE. XPPLICATION FILED OCT-20,1917.

Patented Apr. 2, 1918.

3 SHEETSSHEET 2 gnuento'c CHHRLES H- sINDERSON I I 1i i,

atbozueq 3 SHEETS-SHEET 3- Patented Apr. 2, 1918.

CLHHKLEB H- Smosksow C. H. SINDERSON.

FURNACE.

APPLICATION FILED 0cT.20. 1917.

-lllli CHARLES H. SINDERSON, OF ROCKFORD, ILLINOIS.

FURNACE.

Specification of Letters Patent.

Patented Apr. 2, 19118.

Application filed October 20, 1917. Serial No. 197,628.

To all whom it may concern:

Be it known that I. CHARLES H. SINDER- sort, a citizen of the United States, residing at Rockford, in the county of Winnebago and State of Illinois, have invented certain new and useful Improvements in Furnaces, of which the following is a specification, reference being had to the accompanying drawings. a

This invention relates to certain improvements in furnaces and has relation more particularly to a device of this general character wherein the fuel burns downwardly and it is an object of the invention to pro vide a novel and improved device of this general character wherein a reversible fire pot 1s employed together with a grate arranged at opposite endsof the pot.

And it is also an object of the invention to provide a novel and improved device of this general character including a reversible fire pot and wherein one end portion of the pot is provided with a fixed grate and the opposite end portion with hingedly mounted grate sections together with means for looking said grate sections against movement in one direction.

It is also an object of the invention to provide a novel and improved device of this general character including the combustion chamber having a reversible fire pot arranged therein and wherein a vertical draft passage is provided at one side of the pot together with damper for controlling said passage.

Furthermore, it is an object of the invention to provide a novel and improved furnace of a hot air type and wherein the products of combustion are employed to superheat the air.

The invention consists in the details of construction and in the combination and arrangement of the several parts of my improved furnace wherein certain important advantages are attained and the devicerendered simpler, less expensive and otherwise more convenient and advantageous for use, as will 'be hereinafter more fully set forth.

The novel features of my invention will hereinafter be definitely claimed.

In order that my invention may be the better understood I will now proceed to describe the same with reference to the accompanying drawings wherein:

Figure 1 is a vertical sectional view taken through a furnace constructed in accordance with an embodiment of my invention;

Fig. 2 is a vertical sectional view taken through a furnace as herein embodied and at right angles to the line of section shown in Fig. 1;

Fig. 3 is a horizontal sectional view taken through my improved furnace at a point above the combustion chamber.

Fig. 4 is a view in elevation of an end portion of the fire pot as herein embodied;

Fig. 5 is a view in plan of the end portion of the fire pot as disclosed in Fig. 4; and

Fig. 6 is a fragmentary view in elevation illustrating certain features co-acting with one of the dampers as herein employed and which co-acts with the reversible fire pot.

As disclosed in the accompanying drawings A denotes the jacket or casing of a furnace and which has arranged therein a com bustion chamber B. The side and rear walls of the chamber B are spaced a predetermined distance from the jacket or casing A to afford communication as indicated at a within the jacket or casing so that the air entering through the cold air duct G into the hollow base 1) will be heated as it passes upwardly to the crown or dome E. In communication with the crown or dome E are the pipes F which serve to convey the heated air to the localities desired. In communication with the upper portion of the combustion chamber B is the fuel opening 1 adapted to be closed by the door 2. Also in communication with the lower portion of the combustion chamber is the opening 3 through which the ashes are adapted to be removed and said opening 3 is closed by the door 4:. The door 4 is provided with an opening 5 under control of the damper 6 whereby the draft entering within the lower portion of the combustion chamber may be regulated. The damper 6 may be operated in any desired manner.

Arranged within the jacket or casing A exteriorly of and at opposite sides of the combustion chamber B are the upstanding pedestals 7 provided at their upper ends with the bearings 8 with which are engaged the trunnions 9 extending in opposite directions from the fire pot G at the axial center thereof. The trunnions 9 are directed through suitable openings produced in the adjacent walls of the combustion chamber B -and one of said trunnions 9 is of such a length as to extend exteriorly of the acket or casing A as lndicatcd at 10 and said extended portion is adapted to have engaged therewith a suitable implement whereby requisite rotary movement may be imparted to the fire pot G to invert the same for a purpose which will hereinafter be more fully set forth. The pot G is of a width substantially equal to the width of the combustion chamber B. The length of the fire pot G is materially less than the length of the combustion chamber B whereby spaces 11 and 11 are provided at the front nd rear of the fire pot G, the forward space 11 serving as a flue. The passage or travel of the air upwardly through the spaces 11 and 11 is normally prevented through the medium of the plates 12 and 12 of a width substantially equal to the width of the fines 11 and winch extend entirely across the combustion chamber B. The plate 12 is arranged within the space or flue 11 and serves as a damper. The outer longitudinal marginal portions of each of said plates 12 and 12 is fixed to a rock shaft 14: rotatably supported by the side walls of the combustion chamber B and an end portion of each of said rock shafts extends exteriorly of the casing or jaclret A. Depending from the extended portion of each of the shafts 1i is an arm 15 provided at its lower end portion with a weight 16. The weight 16 serves by gravity to maintain the plates 12 normally in closed positron yet to readily permit the requisite rotation of the fire pot 'G when it is desired to invert said pot. The extended portion of the shaft 1 1 of the plate or damper 12 is provided with a second arm 17 which is adapted to be suitably operated to move the co-acting plate 12 to an open position to further control the action of the draft relative to the fire pot G.

As is indicated in Fig. 6, said arm 17 has engaged therewith a coil spring I) to which is secured a flexible member 0 which may be engaged with any suitable operating means which may be automatic or otherwise. The

'last named plate 12, as particularly illustrated in Fig. 1 coacts with the flue or'passageway 11 immediately adjacent the opening 3. Directly above this passageway 11 the pipe 18 is in commumcation with the combustion chamber B through the top thereof. The pipe 18 is also in communication with a transverse pipe or flue 19 connecting the longitudinal pipes or fines 20, which pipes adjacent the opposite ends are also connected by a second transverse pipe 21. In communication with the second transverse pipe or flue 21 intermediate the length thereof is the pipe .22 extending exteriorly of the casingand leading to a chimney or other point of discharge. The opposi'te extended portion 22 of each ofthe pipes 20 extends exteriorly of the acket or casing A as indicated at and said ex tended portions 23 have co-acting therewith the removable caps 24. By this arrangement it will be perceived that upon removal of the caps 2% the fines or pipes 20 may be readily and conveniently cleaned.

The opposite ends of the fire pot G are open and one end portion of said pot is intersected by the fixed grate 25. The grate 25 is provided with a shaker section 26 adapted to be operated in any desired manner and preferably by a suitable implement engaged with the arm 27 when the pot G is in such position, as to have the fixed grate 25 arranged at the bottom or in proximity to the opening 3.

Overlying the opposite end portion of the pot G are the swinging grate sections 28 in eluding the oppositely directed trunnions 29 arranged at the outer longitudinal margins thereof and which are rotatably engaged with the adjacent walls of the fire pot G. One of the trunnions 29 of each of the sections 28 is adapted to be engaged with a suitable implement whereby the section may be swung into an open position when desired. The inner longitudinal marginal portion of the sections is provided with the rod 30 having extended end portions adapted to seat within suitable recesses 31 formed in the ends of the fire pot. The rods 30 serve to support the sections 28 in closed position on the pot G. Pivotally en gaged with a wall of the pot G are the hook members 32 adapted to engage extensions of the rods 30 for locking the sections 28in closed position. The pivoted end portion of one of the hook members 32 is provided with the tooth 33 engaging within recess 33 of a second member 32 whereby said members will be caused to swing in unison but in reverse directions when it is desired to disengage the members 32 from the rods 30 so that the sections 28may be raised. Movement may be imparted to the members 32 in any desired manner as indicated at 3% in Fig. l.

In operation the fire pot G is initially arranged with the grate 26 at the bottom thereof and with the sections 28 in open position. After the fire has been started with the requisite amount. of fuel deposited with in the pot the sections 28 are closed and locked in such closed position through the medium of the hook members 32. The pot G is then inverted with the fixed grate 26 at the top. In this arangement it will be perceived that the fire will burn from the top of the pot G downwardly which results in an economy in fuel and a maximum of heat generation. Should it be desired to reduce the draft the damper 6 may be closed. In order to further reduce the burning action of the fuel. withinthe pot G the plate or damper 12 within the passageway or fine 11 immediately adjacent the opening 3 may be thrown into an open position, whereupon passageway or fluell and through the pipe 18 and out through the pipe or flue 22. It will also be understood that the pipes 19,

20 and 21 arranged within the a jacket or' casing A above the combustion chamber B permit the heat carried by the products of combustion to superheat the air within the crown or dome of the jacket or casing A.

From the foregoing description, it is thought to be obvious that, a furnace constructed in accordance with my invention is particularly well adapted for use by reason of the convenience and facility with which it may be assembled and operated and it will also be obvious that my invention is susceptible of some change and modification without materially departing from the prin ciples and spirit thereof and for this reason I do not wish to be understood as limiting myself to the precise arrangement and formation of the several parts herein shown in carrying out my invention in practice except as hereinafter claimed.

I claim 1. In combination with the combustion chamber of a furnace, a fire pot mounted therein for rotary movement and provided with means for rotating the same, the opposite ends of the pot being open, a fixed grate disposed across one end portion of the pot and movable grate sections co-acting with the opposite end portions, certain of the walls of the combustion chamber and the fire pot being spaced apart, and plates normally intersecting said spaces, one of said plates serving as a damper.

2. In combination with the combustion chamber of a furnace, a fire pot mounted therein for rotary movement and provided with means for rotating the same, the opposite ends of the pot being open, a fixed grate disposed across one end portion of the pot and movable grate sections co-acting with the opposite end portions, certain of the walls of the combustion chamber and the fire pot being spaced apart, plates normally intersecting said spaces, one of said plates serving as a damper, and an exhaust fine for the product of combustion in communication with the combustion chamber at a point above one ofthe spaces between a wall of the combustion chamber and the fire pot.

3. In combination with the combustion chamber of a furnace, a fire pot mounted therein for rotary movement and provided with means for rotating the same, the opposite ends of the pot being open, a fixed grate disposed across one end portion of the pot and movable grate sections co-acting with the opposite end portions, certain of the walls of the combustion chamber and the fire pot being spaced apart, plates normally intersecting said spaces, one of said plates serving as a damper, an exhaust flue for the products of combustion in communication with the combustion chamber at a point above one of the spaces between a wall of the combustion chamber and the fire pot, and a controlled draft opening in communication with said spaces at a point below the fire pot.

4. A furnace comprising a casing, a combustion chamber arranged therein, a fire pot positioned within the combustion chamber, pipes disposed through the casing above the combustion chamber, the opposite end portion of the pipes extending exteriorly of the casing, removable members for closing the outer ends of said pipes, cross pipes in communication with the first named pipes, a flue in communication with one of said cross pipes and the combustion chamber, an exhaust flue in communication with the second cross pipe, a wall of the fire pot and an adjacent wall of the combustion chamber being spaced to afford a vertically disposed passageway in vertical alinement with the first named flue, and a damper normally intersecting said passageway, said damper being provided with means for moving the same into open position.

5. A furnace comprising a casing, a combustion chamber arranged therein, a fire pot positioned withinthe combustion chamber, pipes disposed through the casing above the combustion chamber, the opposite end portion of the pipes extending exteriorly of the casing, removable caps for closing the outer ends of said pipes, cross pipes in communication with the first named pipes, a flue in communication with one of said cross pipes and the combustion chamber, an exhaust fine in communication with the second cross pipe, a wall of the fire pot and an adjacent wall of the combustion chamber being spaced to afiord a vertically disposed passageway in vertical alinement with the first named flue, a damper normally intersecting said passageway, said damper being provided with means for moving the same into open position, and a controlled opening affording communication with the atmosphere and the lower portion of said passageway.

6. In combination with the combustion chamber of a furnace, a fire pot mounted therein for rotary movement and provided with means for rotating the same, the opposite ends of the pot being open, a fixed grate disposed across one end portion of the pot and movable grate sections co-acting with the opposite end portions, said movable grate sections being mounted for swinging movement, said sections being provided with extensions contacting with the adjacent end portions of the pot for supporting sit the sections on the pot, and means carried by the pot and co-acting with said extensions for locking the sections to the pot.

7. In combination with the combustion chamber of a furnace, a fire pot mounted therein for rotary movement and provided with means for rotating the same, the opposite ends of the pot being open, a fixed grate disposed across one end portion of the pot and movable grate sections mounted on the opposite end portion of the pot, said movable grate sections being mounted for swinging movement, and means carried by the pot and coacting with the grate sections for holding the sections in closed position upon the pot, said means comprising two intermeshing hook members arranged for movement in unison and in opposite directions, said hook members being engageable with the movable grate sections.

8. In combination with the combustion chamber of a furnace, a fire pot mounted therein for rotary movement and provided with means for rotating the same, the opposite ends of the pot being open, a fixed grate disposed across one end portion of the pot and movable grate sections mounted on the opposite end portion of the pot, certain of the Walls of the combustion chamber and the fire pot being spaced apart, plates normally intersecting said spaces, and gravity means co-acting with each of said plates for maintaining the same in its normal position.

In testimony whereof I hereunto afiix my signature in the presence of tWo Witnesses.

CHARLES H. SINDERSON.

Witnesses MARY B. HALL, ANNA CARLIN.

Gopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

